For openSUSE Factory run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/openSUSE_Factory/home:AndnoVember:test.repo
zypper refresh
zypper install mylibrary
For 15.6 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/15.6/home:AndnoVember:test.repo
zypper refresh
zypper install mylibrary
For 15.5 run the following as root:
zypper addrepo https://download.opensuse.org/repositories/home:AndnoVember:test/15.5/home:AndnoVember:test.repo
zypper refresh
zypper install mylibrary